Abstract

In this paper, we investigate relay-selection techniques for two-way cooperative multi-antenna systems, where two terminals simultaneously transmit to each other with the help of relays. In particular, we present a novel two-way relay selection technique based on the selection of the best link, making use of buffers and physical-layer network coding (PLNC), that is named Two-Way Max-Link (TW-Max-Link). We compare the proposed TW-Max-Link to the existing approaches, in terms of pairwise error probability and bit error rate. Simulations are then employed to evaluate the performance of the proposed and existing techniques.

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